feat(rules): add url validator

[davidguilherme]

🔎 Overview

The url validator is really common validator which makes sense to bring it back, as discussed here.

Even though the issue suggests the usage of RFC 3986 regexp. I believe using URL constructor will be more aligned with HTML5 specification [1] [2]

Usage:

<Field name="url" type="url" rules="url" />
<Field name="secure_url" type="url" rules="{ url: /https:\/\/.*/ }" />

✔ Issues affected
closes #3104

[davidguilherme]

@logaretm I am not quite sure how you normally translate the messages for new rules. Can you advise me if I should only update the en locale or I need to update all locales on this PR?

[logaretm]

@logaretm I am not quite sure how you normally translate the messages for new rules. Can you advise me if I should only update the en locale or I need to update all locales on this PR?

I would add a message for the en and any languages I could speak well, and leave the rest to the community

[logaretm]

Much appreciated again, thanks!